Patent US5114799A successfully refreshed from Google Patents.
US5114799A
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Material for roofing and facing
Assignee: SHINSEI KOGYO COMPANY Ltd
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Filing: 1991-01-24
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Granted: 1992-05-19
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Expires: 2011-01-24
Abstract
Abstract Stainless steel sheets are plated with zinc and further phosphated so as to have chromaticness indices of L=45-53, a=0.0-0.4 and b=1.3-4.4. Thus treated stainless steel sheets have sufficient strength, excellent corrosion resistance and a color well harmonizing with other building materials and environment and do not suffer from color change for a prolonged period of time.
Inventors
- 👤 Hidetsugu Ohashi
- 👤 Masayuki Kinugasa
- 👤 Toshiro Adachi
- 👤 Akihiro Nonomura
- 👤 Waro Sekimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:42
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/12; C23C22/14; C23C22/20; E; E04; E04D; E04D3/00; E04D3/02; E04D3/16; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799; Y10T428/12861; Y10T428/12951; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
53 words
A roofing and facing material comprising a ferritic stainless steel sheet having a hot-dip plated zinc layer or layers capable of forming a corrosion product and which are phosphated so that the surface of the phosphated material and the corrosion product have a color tone defined by chromaticness indices of L=45-52, a=0.0-0.4, b=1.3-4.4.
Claim 2
Dependent Claim
53 words
A roofing and facing material comprising a ferritic stainless steel sheet having a hot-dip plated zinc layer or layers capable of forming a corrosion product and which are phosphated so that the surface of the phosphated material and the corrosion product have a color tone defined by chromaticness indices of L=45-52, a=0.0-0.4, b=1.3-4.4.
Claim 3
Dependent Claim
44 words
A roofing and facing material comprising a ferritic stainless steel as claimed in claim 1 wherein the thickness of the plated zinc layer or layers is not less than 200 g/m 2 and the thickness of the phosphated film is 4.0-5.0 g/m 2 .
References Cited (Backward Citations)
US3713902A
Cited
JPS5442693A
Cited
US4500610A
Cited
GB2161499A
Cited
US4533606A
Cited
US4885215A
Cited
US4897317A
Cited
JPS6478832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |